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Related Experiment Videos

Low-fat and high-monounsaturated fatty acid diets decrease plasma cholesterol ester transfer protein concentrations

S Jansen1, J López-Miranda, P Castro

  • 1Unidad de Lípidos y Arteriosclerosis, Hospital Universitario Reina Sofía, Córdoba, Spain.

The American Journal of Clinical Nutrition
|June 29, 2000
PubMed
Summary

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Dietary changes significantly impact cholesterol ester transfer protein (CETP) levels. Replacing saturated fatty acids with NCEP Step I or monounsaturated fatty acid diets lowers CETP concentrations and improves lipid profiles.

Area of Science:

  • Cardiovascular Science
  • Nutritional Science
  • Lipid Metabolism

Background:

  • Cholesterol ester transfer protein (CETP) facilitates lipid transfer between lipoproteins.
  • The atherogenic role of CETP remains debated.
  • Dietary patterns may influence plasma CETP concentrations.

Purpose of the Study:

  • To investigate the association between lipid-lowering diets and plasma CETP concentrations.
  • To determine if changes in plasma lipids correlate with alterations in CETP levels.

Main Methods:

  • A controlled dietary study involving 41 healthy men over three 4-week periods.
  • Diets included: saturated fatty acid-rich (SFA), National Cholesterol Education Program Step I (NCEP Step I), and monounsaturated fatty acid-rich (MUFA).
  • Plasma lipids, apolipoproteins (apo A-I, apo B), and CETP were measured post-diet.

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Main Results:

  • Both NCEP Step I and MUFA diets reduced plasma total cholesterol, LDL cholesterol, apo B, and CETP compared to the SFA diet.
  • The NCEP Step I diet uniquely lowered HDL cholesterol.
  • Positive correlations were observed between plasma CETP and total/LDL cholesterol levels and their respective changes.

Conclusions:

  • Substituting SFA-rich diets with NCEP Step I or MUFA-rich diets effectively decreases plasma CETP concentrations.
  • Dietary fat composition influences CETP levels, suggesting a role in lipid management.